Magnetic field sensing using a fluxgate magnetometer: Difference between revisions
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Created page with "==Basic principles== How does a fluxgate work? A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency. In a fluxgate sensor, the core material has very high magnetic permeability <math>\mu</math>. This means, the core material can..." |
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== | == Introduction to magnetic field sensing== | ||
How does a fluxgate work? | === Different types of magnetometers === | ||
=== Applications === | |||
==Basic principles of a fluxgate == | |||
===How does a fluxgate work?=== | |||
A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency. | A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency. | ||
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It reacts strongly to changes in external fields. Its permeability changes nonlinearly as the material saturates, which is crucial for generating detectable signals (like the 2nd harmonic) when there's an external field. | It reacts strongly to changes in external fields. Its permeability changes nonlinearly as the material saturates, which is crucial for generating detectable signals (like the 2nd harmonic) when there's an external field. | ||
Illustrations of a fluxgate | ===Illustrations of a fluxgate=== | ||
==Introduction to the fluxgate magenotometer== | ==Introduction to the fluxgate magenotometer== | ||
Revision as of 12:09, 23 April 2025
Introduction to magnetic field sensing
Different types of magnetometers
Applications
Basic principles of a fluxgate
How does a fluxgate work?
A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency.
In a fluxgate sensor, the core material has very high magnetic permeability . This means, the core material can concentrate magnetic fields very well. It reacts strongly to changes in external fields. Its permeability changes nonlinearly as the material saturates, which is crucial for generating detectable signals (like the 2nd harmonic) when there's an external field.
Illustrations of a fluxgate
Introduction to the fluxgate magenotometer
We plan for a setup....
Modelling and measurements of a permanent magnet
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